Not trying to underestimate what ponds can do to us, but it
surprises me. And got one question to ask. How does one gets
himself/herself drown in a pond? The structure of the pond? The
depth? Or other reasons?
The report, "Worker drowns after cart rolls into golf course
pond" (ST; Sep 2, 2006) highlights the danger of falling into a
pond. While deep water is normally more risky than shallow water,
the Singapore Life Saving Society considers every body or container
of water a potential hazard. Drownings have been known to occur in
water of as little as five centimetres in depth.
Err... 5cm of water can kill a person? 
http://www.slss.org.sg/Local%20Press%20news.htm
